Chromalox PD412-5 operating instructions General, Installation, Specifications, A.Over-the-Side

Chromalox®

Installation

and

OPERATING INSTRUCTIONS

SERVICE REFERENCE

DIVISION 4		SECTION CIT
SALES	(Supersedes PD412-4)		PD412-5
REFERENCE
			161-049179-001

DATE MAY, 1999

Type CITCast Iron, Metal Melting, Immersion HeatersMaximum Melt Temperature — 950˚F

Specifications

												Displacement			Dimensions (In.)
						D						Volume
	Type CIT-1612 and CIT-1619
		(Figure 1)							Model	Volts	kW	(In3)	A	B	C	D	E	F
		C
									CIT-218	240	3	57	—	18	4-5/8	2	17-3/8	2
							A	1” Conduit
								Opening	CIT-1612	240	5	135	12-1/4	16	2	9	10	3
					E
									CIT-1619	240	5	180	19-1/4	16	2	6	17	3
F
							CIT-2219	240	5	145	18-1/2	12-1/2	—	6-1/2	14-1/2	—
									CIT-2319	240	10	180	19	15-1/4	—	9	15	—
			B	Effective Heated Length

	D
	A	1” Conduit
	E	Opening	F
		Heated
		Length
B	Type CIT-2219 and CIT-2319
		(Figure 2)

Heated

Length

1-1/2”

E

B

5/8”

Tpye CIT-218

(Figure 3)

	2 Holes
	9/16” Dia.
D	2
	-
	1/4”
	3-1/8”
	Dia
	.
C
1” Conduit	3-1/4”
Opening	4-5/8”
	Gasket - For use with CIT-218
	(Figure 4)

GENERAL

WARNING: Hazard of Shock. Disconnect all power before installing, servicing or replacing heaters.

Chromalox Cast-Iron Immersion Heaters are generally used for metal-melting applications such as solder, lead, tin, stereotype metal, babbitt (with 4% or less copper) and other soft metals where maximum working temperature is 950 ˚F.

Note: Not suitable for immersion in zinc or aluminum.

1.Heater Construction Characteristics —

A.High quality resistance wire held in place by compacted mag- nesium oxide in heavy wall steel sheath cast in iron.

B.Large heat output at relatively low watt densities.

C.Excellent heat transfer.

D.A rugged, cast iron terminal box protects the terminals against spillage and abuse.

WARNING: Users should install adequate back-up controls and safety devices with their electric heating equipment. Where the consequences of failure may be severe, back-up controls are essen- tial, including GFCI (Ground Fault Circuit Interrupters). Although the safety of the installa- tion is the responsibility of the user, Chromalox will assist in identifying equipment options.

INSTALLATION

1.Before installing the type CIT heater, inspect it for possible dam- age which may have occurred during shipment. Also, check to insure that the line voltage is the same as that stamped on the nameplate.

2.CAUTION: Mount heater in the tank so that the liquid level will always be above the effective heated portion of the heater. If the heater is not properly submerged, it will overheat and damage the heating elements and create a possible fire hazard due to exces-

sive sheath temperatures.

WARNING: When melting solids by direct immersion, a surface vent should be provided to allow gases to escape.

A.Over-the-Side

Models CIT-1612 and CIT-1619 (see Figure 1 - for use in flat bottomed and straight-sided vessels); CIT-2219 and CIT-23 19 (See Figure 2 - for use in sloping vessels) are designed for over- the-side installation.

1.To resist buoyancy of heater in heavy metals, securely mount heater to metal crucible by clamping.

CAUTION: Do not support or suspend heater by the tubular section adjacent to the terminal box as the tubular section will be damaged by bending.

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